When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Team, you have this strange inclination to approach every situation with the most pessimistic view of a person's experience, knowledge, general intelligence, etc. That trait is probably not helpful to you in life.
Of course, I know to use grease sparingly--especially on brake parts, and I did not use too much. The Permatex ceramic product swells rubber, regardless of what the label says. It happened to me on both sides. Since we have a rubber anti-vibration bushing on one glide pin in each front caliper, it should not be used on that glide pin. The swelled rubber causes binding. I can only assume their claim to be rubber safe simply means it will not cause the boots to disintegrate or something.
I just use the packet of goo that comes with every set of Hawk Pads, if the hardware feels anything other than free-floating. I try to clean everything and re-lube once every season or two.
Got a bunch of extras if anybody wants me to mail them some.
I dunno, different rubber formulations in differently sourced parts? I had to get extremely physical with both calipers to get the pins back out, which of course destroyed the bushings. Everything was fine, before I used that grease on those pins. Never had a problem since then. The only thing that changed in my setup was that grease.
I don't have stock front calipers either not easy to change the rear without giving up the e-brake though there are some calipers offered in Europe that have external pull arms similar to the RX8 OE calipers, but for some reason they don't want to either sell or ship them to the US
I use that on some of my brake parts, but I found it swelled the rubber bushings on the front slide pins, which caused my front calipers to sieze. I have used Sil-Glide on the pins since then with success. It is only rated to 500F, but those pins don't get anywhere near that hot. Most importantly, it is rubber safe.
I also used the high temp purple permatex stuff and also suffered swelling of the rubber bushings on the front caliper guide pins. Perhaps I used to much. However, I ditched those bushings and now the caliper glides like ice. I haven't regreased all season. So it's good stuff, but it did seem to make my bushings swell.
I will start by removing the rear pads, lubing the guides with the purple stuff, and try to clean the piston and spin it all the way back in.
Is there anything acceptable to lube the piston/seals?
I also used the high temp purple permatex stuff and also suffered swelling of the rubber bushings on the front caliper guide pins. Perhaps I used to much. However, I ditched those bushings and now the caliper glides like ice. I haven't regreased all season. So it's good stuff, but it did seem to make my bushings swell.
I will start by removing the rear pads, lubing the guides with the purple stuff, and try to clean the piston and spin it all the way back in.
Is there anything acceptable to lube the piston/seals?
Appreciate everyone's feedback.
I tried ditching the bushings, too, but I ran into a snag. With 17X9 Enkei rims, the caliper would vibrate with enough movement to contact the rims and chatter loudly.
I just use the packet of goo that comes with every set of Hawk Pads, if the hardware feels anything other than free-floating. I try to clean everything and re-lube once every season or two.
Got a bunch of extras if anybody wants me to mail them some.
Hey are coming out to Summit this weekend? Might come out on Saturday or Sunday...
he has videos with me in them :-). Will be at the summit main tomorrow are you coming out?
gotcha. ;-)
I'm hiking tomorrow (taking a short break from the track before VIR next weekend and Watkins Glen the following and Summit Jefferson the following-following). Should be GREAT weather for you guys; enjoy!!
I also used the high temp purple permatex stuff and also suffered swelling of the rubber bushings on the front caliper guide pins. Perhaps I used to much. However, I ditched those bushings and now the caliper glides like ice. I haven't regreased all season. So it's good stuff, but it did seem to make my bushings swell.
I will start by removing the rear pads, lubing the guides with the purple stuff, and try to clean the piston and spin it all the way back in.
Is there anything acceptable to lube the piston/seals?
I said I'm not surprised, because mixing that much initial bite in the rear with a less bitey pad in the front could make things interesting back there.
there are plenty of pads with a higher friction level than HP+ that don’t have a hair trigger on/off grabbiness to them. It might not be so much a bother in an RX8, but back in early 200x when I was running a Z06 Vette it was guaranteed instant ice mode braking.
Just to be sure, I checked out the rear caliper slide bushings on my car the other night and they slide in/out easily
09-23-2017, 12:40 PM
there are some calipers offered in Europe that have external pull arms similar to the RX8 OE calipers, but for some reason they don't want to either sell or ship them to the US
